Under what circumstances may information be classified?

Information may be classified under several circumstances to protect national security. The correct answer highlights that classification is applicable when information is owned by the U.S. Government, when its unauthorized disclosure could cause damage to national security, and when it pertains to military operations. Each of these circumstances serves as a justification for classifying information.

When information is owned by the U.S. Government, it falls under the purview of federal classification authority, which allows for the safeguarding of sensitive data.

Additionally, if unauthorized disclosure of this information could reasonably be expected to harm national security, it necessitates classification to prevent potential risks to the country. National security is a primary concern, and protecting against information leaks is crucial for maintaining operational security and safeguarding sensitive areas like military operations.

Lastly, any information specifically related to military operations can also be classified to ensure that tactical advantages or strategic capabilities are not compromised.

Therefore, since all these conditions align with the rationale for classification, the choice that encompasses all of them is the most comprehensive and accurate.